She was, in fact, quite a pleasant looking girl, even if her bosom had clearly been intended for a girl two feet taller; but she was not Her. The Egregious Professor of Grammar and Usage would have corrected this to "she was not she," which would have caused the Professor of Logic to spit out his drink.
Unseen Academicals: (Discworld Novel 37) (ed. Random House, 2009) - ISBN: 9781407047294